期刊
CHEMCATCHEM
卷 13, 期 4, 页码 1152-1156出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cctc.202001522
关键词
Manganese; organosilyl ligand; hydrosilylation; isocyanide; 1; 1; 3; 3-tetramethyldisiloxane
资金
- Kanagawa Institute of Industrial Science and Technology (KISTEC)
- Ministry of Education, Culture, Sports, Science and Technology, Japan [16H04120, 20H02751]
- Grants-in-Aid for Scientific Research [20H02751, 16H04120] Funding Source: KAKEN
The article discusses a method of catalytic hydrosilylation using manganese complexes, with improved catalytic efficiency achieved by modifying the structure of the complex and combining it with isocyanide.
The coordinatively unsaturated manganase(II) bis(supersilyl) complex Mn[Si(SiMe3)(3)](2)(THF)(2) (2) was synthesized in one step via the reaction of MnBr2 with two equivalents of KSi(SiMe3)(3) in THF. Complex 2 acts as an effective precatalyst for the catalytic hydrosilylation of aldehydes and ketones with 1,1,3,3-tetramethyldisiloxane (TMDS). The catalytic efficiency can be improved by combining 2 and adamantyl isocyanide (CNAd). The stoichiometric reaction of 2 and two equivalents of CNAd led to the isolation of Mn[Si(SiMe3)(3)](2)(CNAd)(2) (3) in high yield. Complex 3 shows superior catalytic performance than 2 in the hydrosilylation of relatively unreactive ketones.
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